Stuck in a while loop within a function (python) -

i'm trying find gender of user. code function:

def getgender(): """figure out gender of person.""" gender = input("are male or female? (m/f)").lower() while gender != "m" or "f":     gender = input("are male or female? (m/f)").lower()  return gender 

when run keep getting stuck in loop, when input valid response. main code:

def main():     welcome()     getgender()     if gender == "m":         malecalc()         malefinding()     else:         femalecalc()         femfinding()     disclaimer()  #run program main() input("\n\npress enter key exit.") 

i've been trying figure out if problem function's while loop or if it's overall logic issue.

thanks help.

one issue in section:

gender != "m" or "f" 

both "m" , "f" treated true in python, , so, != binds more tightly or, same as

(gender != "m") or "f" 

which true.

try instead:

while gender != "m" or gender != "f": 

or

while gender not in ("m", "f"):